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USB: xhci: Support for 64-byte contexts

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Adds support for controllers that use 64-byte contexts.  The following context
data structures are affected by this: Device, Input, Input Control, Endpoint,
and Slot.  To accommodate the use of either 32 or 64-byte contexts, a Device or
Input context can only be accessed through functions which look-up and return
pointers to their contained contexts.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Acked-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
John Youn
2009-07-27 12:05:15 -07:00
committed by Greg Kroah-Hartman
parent 28c2d2efb4
commit d115b04818
5 changed files with 287 additions and 163 deletions
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61
drivers/usb/host/xhci.h
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@@ -446,6 +446,27 @@ struct xhci_doorbell_array {
#define EPI_TO_DB(p) (((p) + 1) & 0xff)
/**
* struct xhci_container_ctx
* @type: Type of context. Used to calculated offsets to contained contexts.
* @size: Size of the context data
* @bytes: The raw context data given to HW
* @dma: dma address of the bytes
*
* Represents either a Device or Input context. Holds a pointer to the raw
* memory used for the context (bytes) and dma address of it (dma).
*/
struct xhci_container_ctx {
unsigned type;
#define XHCI_CTX_TYPE_DEVICE 0x1
#define XHCI_CTX_TYPE_INPUT 0x2
int size;
u8 *bytes;
dma_addr_t dma;
};
/**
* struct xhci_slot_ctx
* @dev_info: Route string, device speed, hub info, and last valid endpoint
@@ -583,32 +604,16 @@ struct xhci_ep_ctx {
/**
* struct xhci_device_control
* Input context; see section 6.2.5.
* struct xhci_input_control_context
* Input control context; see section 6.2.5.
*
* @drop_context: set the bit of the endpoint context you want to disable
* @add_context: set the bit of the endpoint context you want to enable
*/
struct xhci_device_control {
/* Input control context */
struct xhci_input_control_ctx {
u32 drop_flags;
u32 add_flags;
u32 rsvd[6];
/* Copy of device context */
struct xhci_slot_ctx slot;
struct xhci_ep_ctx ep[31];
};
/**
* struct xhci_device_ctx
* Device context; see section 6.2.1.
*
* @slot: slot context for the device.
* @ep: array of endpoint contexts for the device.
*/
struct xhci_device_ctx {
struct xhci_slot_ctx slot;
struct xhci_ep_ctx ep[31];
u32 rsvd2[6];
};
/* drop context bitmasks */
@@ -616,7 +621,6 @@ struct xhci_device_ctx {
/* add context bitmasks */
#define ADD_EP(x) (0x1 << x)
struct xhci_virt_device {
/*
* Commands to the hardware are passed an "input context" that
@@ -626,11 +630,10 @@ struct xhci_virt_device {
* track of input and output contexts separately because
* these commands might fail and we don't trust the hardware.
*/
struct xhci_device_ctx *out_ctx;
dma_addr_t out_ctx_dma;
struct xhci_container_ctx *out_ctx;
/* Used for addressing devices and configuration changes */
struct xhci_device_control *in_ctx;
dma_addr_t in_ctx_dma;
struct xhci_container_ctx *in_ctx;
/* FIXME when stream support is added */
struct xhci_ring *ep_rings[31];
/* Temporary storage in case the configure endpoint command fails and we
@@ -1139,8 +1142,7 @@ void xhci_debug_ring(struct xhci_hcd *xhci, struct xhci_ring *ring);
void xhci_dbg_erst(struct xhci_hcd *xhci, struct xhci_erst *erst);
void xhci_dbg_cmd_ptrs(struct xhci_hcd *xhci);
void xhci_dbg_ring_ptrs(struct xhci_hcd *xhci, struct xhci_ring *ring);
void xhci_dbg_ctx(struct xhci_hcd *xhci, struct xhci_device_control *ctx, dma_addr_t dma, unsigned int last_ep);
void xhci_dbg_device_ctx(struct xhci_hcd *xhci, struct xhci_device_ctx *ctx, dma_addr_t dma, unsigned int last_ep);
void xhci_dbg_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, unsigned int last_ep);
/* xHCI memory managment */
void xhci_mem_cleanup(struct xhci_hcd *xhci);
@@ -1207,4 +1209,9 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex,
char *buf, u16 wLength);
int xhci_hub_status_data(struct usb_hcd *hcd, char *buf);
/* xHCI contexts */
struct xhci_input_control_ctx *xhci_get_input_control_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx);
struct xhci_slot_ctx *xhci_get_slot_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx);
struct xhci_ep_ctx *xhci_get_ep_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, unsigned int ep_index);
#endif /* __LINUX_XHCI_HCD_H */